Deep learning-based mixed-dimensional Gaussian mixture model for characterizing variability in cryo-EM.
Deep learning-based mixed-dimensional Gaussian mixture model for characterizing variability in cryo-EM.
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DOI:
10.1038/s41592-021-01220-5
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发表时间:
2021-08
期刊:
影响因子:
48
通讯作者:
Ludtke SJ
中科院分区:
文献类型:
--
作者:
Chen M;Ludtke SJ
Structural flexibility and/or dynamic interactions with other molecules is a critical aspect of protein function. CryoEM provides direct visualization of individual macromolecules sampling different conformational and compositional states. While numerous methods are available for computational classification of discrete states, characterization of continuous conformational changes or large numbers of discrete state without human supervision remains challenging. Here we present e2gmm, a machine learning algorithm to determine a conformational landscape for proteins or complexes using a 3-D Gaussian mixture model mapped onto 2-D particle images in known orientations. Using a deep neural network architecture, e2gmm can automatically resolve the structural heterogeneity within the protein complex and map particles onto a small latent space describing conformational and compositional changes. This system presents a more intuitive and flexible representation than other manifold methods currently in use. We demonstrate this method on both simulated data as well as three biological systems, to explore compositional and conformational changes at a range of scales. The software is distributed as part of EMAN2.
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影响因子:
64.8
作者:
Kim SJ;Fernandez-Martinez J;Nudelman I;Shi Y;Zhang W;Raveh B;Herricks T;Slaughter BD;Hogan JA;Upla P;Chemmama IE;Pellarin R;Echeverria I;Shivaraju M;Chaudhury AS;Wang J;Williams R;Unruh JR;Greenberg CH;Jacobs EY;Yu Z;de la Cruz MJ;Mironska R;Stokes DL;Aitchison JD;Jarrold MF;Gerton JL;Ludtke SJ;Akey CW;Chait BT;Sali A;Rout MP
通讯作者:
Rout MP
影响因子:
64.5
作者:
Davis, Joseph H.;Tan, Yong Zi;Carragher, Bridget;Potter, Clinton S.;Lyumkis, Dmitry;Williamson, James R.
通讯作者:
Williamson, James R.
影响因子:
--
作者:
Ludtke, S. J.
通讯作者:
Ludtke, S. J.
影响因子:
3
作者:
Baldwin, P. R.;Penczek, Pawel A.
通讯作者:
Penczek, Pawel A.
影响因子:
64.8
作者:
Ke, Zunlong;Oton, Joaquin;Briggs, John A. G.
通讯作者:
Briggs, John A. G.